Air-brake-release device.



A. W. ROLLINGS.

AIR BRAKE RELEASE DEVICE.

APPLICATION FILED MAY 3, 1911.

1,001,985, Patented Aug. 29, 1911.

3 m Lam 11301,

barren sra'rns Parana- Y o fl h ALEX WOODS ROLLINGS, OF MONTGOMERY, ALABAMA, ASSIGNOR OF ONE-HALF TO MOSES J. POWELL OF MONTGOMERY, ALABAMA; v

am-anairn-nnnmsn DEVICE.

1,001,985, Specification of Letters Patent. Patented Aug, 29,1911,

Application filed May 3; 1911. Serial-No. 624,783.

To all whom it may concern; tothe car C. To the end of each of said Be it known that I, ALnx Wooos RoLIr arms the inner end of a transversely exmcs, a citizen of the United States, resid-- tending release rod 13 is loosely connected, ihg at Montgomery, in the county of Montthe outer end of said rodextending through 5 m ry dst t f Al b ha inventa suitable support 14 fixed to the bottom of 6 ed certain new and useful Improvements in the car and having a handle formed thereon Air-'Brak -R l a D vi f whi h th disposed beyond the side of the car whereby following is a specification, reference being said rod may be actuated to rotate the valve had to the accompanying drawings, member 8 and open the bleed 000k.

10 This invention relates to air brake release ,Upon the bottom of the car and adjacent 65 devices and more particularly to air brakes on Side thereof, a longitudinally disposed of that character commonly: employed on red orshaft16 is rotatably mounted in suitbox or freight ar th obj t f th inable bearinos 15. Each end of this rod has vention being to provide a release device L r nk arm l6 formed h r n, Which is whereby the air from the reservoir of the sv sely disposed beneath the car, one 70 brake system ma be bled therefrom from of said r nk arms ing di p e y n th id or t 0 th the end of the car. The crank 0n the inner A further object of th invention resides d of the r 1 is connected y means of in the provision of very simple and eflicient fl 11111! 7 W h h her f he ods 1 11- 30 means for opening the release valve or bleed nected to he. rotary valve member 8. A. 75 cock in the event that the brakes stick when llymovable rele s rod 18 is slidahly pressure is. increased in the train line, a o mounted in bearings 19 fixed to the end of th t th br k 'f il t l 4 the car, and the lower end of said rod is With the above and other objects in view, 3 COH e'd to the crank arm 16 on the invention consists of the novel features t h il; h rodor shaft 16. The upper 80 of construction, combination and arrange end of thls t ly ed release rod ment of parts hereinafter fully described 'ee ds e t e f t w and is p and claimed, and illustrated-in the accomf W h a sultab h e y means of panyjng drawings: i hi h a which it is adapted to be actuated.

Figure 1 is a side elevation of a release 3 means: fih aljmngement of Parts as d i f i b k b d i my i above descr1bed, 1t will at once be seen that provement-s; Fig. 2 is-a section taken'on the the release Valve bleed cock m y be line 92 of Fig. 1; Fig.3 is an end view e d iron! h p the @511 Whlle the of. a car showing the vertical release rod same 15 h motlon- In f brake Systems of 35 t di t th i th of; Fi 4 i a d the character now generally used, it is neces- 90 tail section of the release valve or bleed y to p the m nd f0r the trainman cock; and Fig. 5 is a side elevation showing 'f C f ed he all from the reset-- a slightly modified form of the invention. 9 y a le means arranged upon the Referring in detail to the drawing 5 dess1de of the-car. With my device, however, it

40 jgnates the air drum or reservoir is 18 unnecessary to stop the train 01 for the 9 mounted beneath the car C, spaced trans- Operator to descend m the p of the cal, verse bars or beams 6 being secured to the as th .leleflse Valve may be readily opened bottom of the car to which the drum is atby simply forcing the releas rod 18 downtached atits opposite ends. war'dly, thereby rotating the longitudinal A release valve or bleed cock 7 is secured r h ft 14 and, hr ugh the medium of 1.00v

in the wall of the drum or reservoir 5 and he link 17 thereby transmit such rotary consistsof a rotary valve member 8 -armovement to the valve member 8. Thus the ranged within a suitable casing 9. This release valve may be easily and quickly valve member is provided with the port10 opened in the event that the brake should which is adapted to register with the exbecome stuck so that-the release of the same 105 haust passage 11 in the valve casing to bleed. is assured and undue wear of the truck the air from the drum or reservoir 5. Upon wheels eliminated. v the rotary valve member 8 the oppositely In Fig. .5 of the drawings I have disextending-arms 12 are formed, said arms closed a slightly modified form of the inbeing transversely disposed with relation vention wherein the pipe 20 is employed, 0

i said pipe being suitably mounted upon the nected to the air drum or reservoir bottom and one end of the car and con- The release valve or bleed cock 7 is arranged upon the upper end of this pipe which is disposed above'the top of the car. Thus it will be readily seen that when it is desired to reduce the pressure in the reservoir, the valve 7 may be easily and quickly opened from the top of the car. This form of the lnvention is extremely simple, inexpensive and very-efiicient in practical operapreferred construction and arrangement of the various parts, it will be understood that the device is susceptible of considerable modification without departing from the essential feature or sacrificing any of the advantages of the invention. v

Having thus described the invention what is claimed is 1. The combination with a car provided with an air brake and an air reservoir, of a bleed cock for said reservoir including a rotary valve member having oppositely extending arms formed thereon transversely disposed beneath the car, transversely disposed release rods loosely connected to said arms and. extending beyond opposite sides of the car, a longitudinally disposed rod rotatably mounted upon the bottom of the car having a crank formed upon each of its ends, one 7 beyond the end of the car, a link connecting the other crank to one of said transversely disposed rods adjacent its point of connection to the arm of the valve member, and a vertically disposed release rod connected to the first named crank and extending above the top of the car, substantially as and for the purpose specified. I

2. The combination with a car provided with an air brake and an air reservoir, of a bleed cock for said reservoir including a rotary valve member having oppositely extending arms formed thereon, a transversely disposed release rod loosely connected to one of said arms and extending beyond one side of the car, a longitudinally disposed rod rotatably mounted upon the bottomof the car having a crank formed on each end, a link connection between one of said cranks and the other arm of said valve member, and a vertically disposed release rod connected to the other of said cranks and extending above the top of the car, substantially as and for the purpose specified.

In testimony. whereof I hereunto afiix my signature in the presence of two witnesses.

ALEX WOODS ROLLINGS. Witnesses: EFFIE TURNIPSEED,

J. R. THOMAS.

of said cranks being disposed 

